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Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)
POSIX allows mutexes to be recursive. That means the same thread can lock the same mutex twice and won't deadlock. Of course it also needs to unlock it twice, otherwise no other thread can obtain the mutex. Not all systems supporting pthreads also support recursive mutexes, but if they want to be P...
How can I disable a button on a jQuery UI dialog?
...ou have it), you can use it to disable the button and update the state visually, like this:
$(".ui-dialog-buttonpane button:contains('Confirm')").button("disable");
You can give it a try here...or if you're on an older version or not using the button widget, you can disable it like this:
$(".ui-...
MySQL Data - Best way to implement paging?
... (not 1):
SELECT * FROM tbl LIMIT 5,10; # Retrieve rows 6-15
To retrieve all rows from a certain offset up to the end of the result set, you can use some large number for the second parameter. This statement retrieves all rows from the 96th row to the last:
SELECT * FROM tbl LIMIT 95,1844674407370...
NoSql vs Relational database
...
Not all data is relational. For those situations, NoSQL can be helpful.
With that said, NoSQL stands for "Not Only SQL". It's not intended to knock SQL or supplant it.
SQL has several very big advantages:
Strong mathemat...
The application may be doing too much work on its main thread
...on may be
doing too much work on its main thread.” So what does it actually
means, why should you be concerned and how to solve it.
What this means is that your code is taking long to process and frames
are being skipped because of it, It maybe because of some heavy
processing that you are d...
Deleting a resource using http DELETE
...DELETE as an idempotent
operation requires the server to keep
track of all deleted resources.
Otherwise, it can return a 404 (Not
Found).
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Java JTable setting Column Width
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What happens if you call setMinWidth(400) on the last column instead of setPreferredWidth(400)?
In the JavaDoc for JTable, read the docs for doLayout() very carefully. Here are some choice bits:
When the method is called as a result of the ...
How do I configure PyCharm to run py.test tests?
..., and added test_sample.py to it. Now I want to configure PyCharm to run all the tests in my "tests" directory.
12 Answer...
List of macOS text editors and code editors [closed]
...for this and found Maudite's question about text editors but they were all for Windows.
39 Answers
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Why does Math.Round(2.5) return 2 instead of 3?
...lows IEEE Standard 754,
section 4. This kind of rounding is
sometimes called rounding to nearest,
or banker's rounding. It minimizes
rounding errors that result from
consistently rounding a midpoint value
in a single direction.
You can specify how Math.Round should round mid-points usi...